Home / 122,144-168,539.03-76,789.85

Finding the Fourth Proportional to 122,144, 168,539.03 and 76,789.85

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Solution

The fourth proportional to 122,144, 168,539.03 and 76,789.85 is: 105,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,144 : 168,539.03 = 76,789.85 : x
  2. Step 2: Convert to fraction form
    122,144/168,539.03 = 76,789.85/x
  3. Step 3: Cross multiply
    122,144x = 168,539.03 × 76,789.85
  4. Step 4: Simplify right side
    122,144x = 12,942,086,832.85
  5. Step 5: Solve for x
    x = 12,942,086,832.85/122,144
  6. Step 6: Final answer
    x = 105,957.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.